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arXiv · 1506.03358

Optical Flow on Evolving Sphere-Like Surfaces

Lukas F. Lang·Otmar Scherzer
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Abstract

In this work we consider optical flow on evolving Riemannian 2-manifolds which can be parametrised from the 2-sphere. Our main motivation is to estimate cell motion in time-lapse volumetric microscopy images depicting fluorescently labelled cells of a live zebrafish embryo. We exploit the fact that the recorded cells float on the surface of the embryo and allow for the extraction of an image sequence together with a sphere-like surface. We solve the resulting variational problem by means of a Galerkin method based on vector spherical harmonics and present numerical results computed from the aforementioned microscopy data.

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Lukas F. Lang, Otmar Scherzer. 2015-06-10. Optical Flow on Evolving Sphere-Like Surfaces. https://arxiv.org/abs/1506.03358

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